Exploit line of sight issue in WVW NE and NW Towers

[Heibi.4251]

I'm not sure if ANET devs intended for this to happen but in the North East and North West Towers there is a Line of Sight exploit that any Thieves, Mesmers, Elementalists and Necro can use to leap up into the tower lord room. It may be on the inside but anyone with blink-type skill can enter the lord's room from there. They port right over a railing. So the big question is, did you intend for this to be there?
We had enemy scourges use it multiple times last night bringing 20 each of their massive zerg around our defenses. None of us new the exploit existed until that moment and they blatantly used it in front of us. We had driven them back 2 times before they used that "trick". Once more when they did it the first time, and then they brought more people and we coudln't stop them.